bobbywalter
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- Joined
- Aug 9, 2007
- Messages
- 25,538
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- 3,101
- City
- woodhaven mi
- Vehicle Year
- 1988
- Engine
- Transmission
- Automatic
- Total Lift
- sawzall?
- Tire Size
- 33-44
- My credo
- it is easier to fix and understand than "her"
So basically what you are saying is when I turn the high setting on I'm actually turning both on and that can cause a problem.
When I hook the high speed wire up when the fan is on or off the speed is the same.
I need to look into how the Taurus setup is wired from the factory. I think I'm already running the Taurus relay, just not all the wiring to it. I will say however the high setting was hooked up by the PO, it has an eye-let end on the high speed wire. Im running the wiring that he ran but since his truck was used in drag racing, I assume it was hooked up to turn on with the truck off via toggle switch to cool it off.
I first need to get a new temp gauge and see how hot my engine is first and then go from there but will consider the 5 pin relay. My dad it's good with wiring and whatnot, I suck at it (who do you think has wired this truck to this point?)
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So what would you say is a good size relay that I should be hooking up for the high setting? If I can't find a single cheap enough, like you said I can pigtail/daisy wire relays to split the load (I will have to look up how to do that one). Maybe I can pop a few hoods at my local jy and nab a relay that way.
I do need to finish getting my cooling system hooked up, right now it's not hooked up to the over flute and pukes on the ground when filled up like it should when warmed up, just need to get a couple of 90 barbs and some hose too get output hooked to the overt flow tank.
Got a three day weekend coming up so I will try to squeeze getting the cooling system hooked up right and a new temp gauge in with me hopefully finishing the xmember.
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sorry i am not answering all of you questions....
yes its possible to damage your fan if both poweres are active....
with the taurii type fans i have used double 40 amp setups with no real issues. (thats the feed of one fan speed with heavy gauge wire across two relays) i have hurt the fox 4 cyl mustang fan switches though as i think the cheaper relays pull too much to throw them. this of course is solved with a low pull relay to throw the two other relays....gets to be a bit of wiring but if you pull a 3 pack unit that runs the eec and fuel pumps from certain crownvics/lincolns you will have it all in one nice neat package. i usually have those laying around but i built a few harnesses recently and they were incorporated into those.
this is the relay setup from the vic type cars.

i also use cryden transistor relay units when i get get them, but i cant get for or sell them to others so i rarely show or mention them....
basically the typical parts store 40 amp ones are cheap and easy for most to get and work with.
the 5 pole ones used to be the standard at a typical parts store but i notice the last 5 years or so they are hard to find.
i gave my last cryden setup to another guy and want to replace it again soon. i am only running low speed on my 6.5 setup at the moment, but have a fresh gm switch i am going to test out next for my single low speed automatic setup.